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Université de Provence - Aix-Marseille I Hyper Articles en Ligne |
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Université de Provence - Aix-Marseille I Hyper Articles en Ligne |
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| HAL : hal-00451065, version 1 |
| DOI : 10.1016/j.geoderma.2009.07.022 |
| Fiche détaillée |  Récupérer au format |
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| Geoderma 153, 1-2 (2009) pp 163-171 |
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| Study of the aggregation of the surface layer of Technosols from stormwater infiltration basins using grain size analyses with laser diffractometry |
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| Anne Laure Badin 1Guillaume Mederel 1 |
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| (15/10/2009) |
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| To improve understanding of the behavior of contaminants in soils in urban areas, it is vital to characterize the overall material and not only the level of contamination. The present study aims at describing the aggregation state of contaminated materials from the surface of a stormwater infiltration basin and the role of their constituents (microorganisms, organic matter, water and carbonates). Grain size distribution and aggregation state were measured by laser diffractometry before and after sonication. To eliminate each material constituent one by one, 4 kinds of treatment (fumigation, oxidation, drying and acidification) were performed (respectively for microorganisms, organic matter, water and carbonates). Unfortunately, because of methodological shortcomings, the result concerning the role of microorganisms in aggregation was questionable. The roles of material constituents were deduced from the effects of the treatments observed on aggregation states. Organic matter (OM), which is mostly constituted from hydrocarbons, was shown to be the main constituent responsible for the aggregation of the materials studied. |
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| 1 : | Laboratoire des Sciences de l'Environnement |
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| 2 : | Division Eau et Environnement (LCPC/EAU) |
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LCPC – PRES Université Nantes Angers Le Mans [UNAM] |
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| 3 : | Centre européen de recherche et d'enseignement de géosciences de l'environnement (CEREGE) |
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CNRS : UMR6635 – Institut de recherche pour le développement [IRD] – INSU – Université de Provence - Aix-Marseille I – Université Paul Cézanne - Aix-Marseille III |
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| Domaine | : | Sciences de l'environnement/Biodiversité et Ecologie Planète et Univers/Sciences de la Terre/Hydrologie Sciences de l'environnement/Milieux et Changements globaux |
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| POLLUANT – POLLUTION DES SOLS – EAU DE RUISSELLEMENT – GRANULOMETRIE |
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| hal-00451065, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00451065 | |
| oai:hal.archives-ouvertes.fr:hal-00451065 | |
| Contributeur : Ifsttar Cadic | |
| Déposé pour le compte de : | |
| Soumis le : Jeudi 28 Janvier 2010, 10:30:49 | |
| Dernière modification le : Jeudi 28 Janvier 2010, 10:30:55 | |
